Your Baby’s Endocrine System

The endocrine system is a system of glands that secrete hormones to instruct the body’s cells about what do to and when to do it. The major glands of the endocrine system are the pituitary, pineal, hypothalamus, parathyroid, thyroid, adrenal, pancreas, ovaries, and testes. When each of these glands secretes a particular hormone, that hormone enters the bloodstream. Together, the glands secrete more than 20 major hormones that are responsible for mood, growth rate, metabolism, sexual function,...